Effects of acetic acid on microstructure and electrochemical properties of nano cerium oxide films coated on AA7020-T6 aluminum alloy

被引：1
|
作者：
Hasannejad, H. [1 ]
Shahrabi, T. [1 ]
Aliofkhazraei, M. [1 ]
机构：
[1] Tarbiat Modares Univ, Dept Mat Engn, Fac Engn, Tehran, Iran
来源：
RARE METALS | 2009年 / 28卷 / 01期
关键词：
nano cerium oxide films; acetic acid; aluminum alloy; electrochemical property; microstructure; GEL; DEPOSITION; CONVERSION; COATINGS;
D O I：
10.1007/s12598-009-0019-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nano cerium oxide films were applied on AA7020-T6 aluminum alloy and the effects of acetic acid concentration on the microstructure and electrochemical properties of the coated samples were investigated by using scanning electron microscopy (SEM), X-ray diffraction (XRD), and potentiodynamic polarization methods. It has been found that by increasing the acetic acid/CeCl3 center dot 7H(2)O molar ratio, high uniform and crack-free films with well-developed grains were obtained and grain sizes of the films decreased. Elimination of cracks and decreasing grain size of the nano cerium oxide films caused corrosion resistance to increase.
引用
收藏
页码：98 / 101
页数：4
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